1PYJ:
reference: Solution structure of an O6-[4-oxo-4-(3-pyridyl)butyl]guanine adduct in an 11 mer DNA duplex: evidence for formation of a base triplex., Peterson LA, Vu C, Hingerty BE, Broyde S, Cosman M, Biochemistry 2003 Nov 18;42(45):13134-44. PMID: 14609323

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).